Blackest night is over.. here is the final chronology, and the reading list based on it is attached at the end.

Blackest Night: Tales of the Corps #1
Blackest Night: Tales of the Corps #2
Blackest Night: Tales of the Corps #3
Titans #15- Tempest returns. BN: Prelude
Green Lantern #43- Prologue
Blackest Night #0
Blackest Night #1- Power Levels 0.01% to 0.02%
Green Lantern Corps #39- Kyle & Guy mention attending Tribute Day from BN #1, but also features the events leading to their report toward the end of BN #1. Issue happens side-by-side with BN #1.
Green Lantern #44- Power Levels 0.75% to 1.20%
Blackest Night #2- Power Levels 2.63% to 3.43%
Starman #81- Doesn't appear to matter where to put it, but it seems pre-Nekron rise and very early by the behavior of the security guards.
The Power of Shazam #48- Appears to take place early on in the Blackest Night. Exact place not able to ascertain.
Blackest Night: Batman #1- No power levels but the Bat Symbol is destroyed so Hal already crashed into it.
Blackest Night: Superman #1- Power Levels 3.44% to 3.82%
Blackest Night: Titans #1- No power level's but Hawk is out of his grave so this goes after BN #2
Green Lantern #45- Power Levels 45.43%
Green Lantern Corps #40- Power Levels 45.96% to 46.31%
Blackest Night: Batman #2- Power Levels 46.65% to 47.01%
The Question #37- Put before BN #3 because when Jason touches Ronnie in BN #3, he sees Vic Sage's grave empty already.
Blackest Night #3- Power Levels 50.32% to 56.59%
Adventure Comics #4- Events happen simultaneous to Alex Luthor rising in BN #3.
Adventure Comics #5- The previous's issue's story is wrapped up very shortly afterward.
Justice League of America #38- Dr. Light I is seen as a Black Lantern. This happened at the end of BN #3.
Blackest Night: Superman #2- No power levels but Psycho Pirate is there so it's after BN #3.
Suicide Squad #67- Power Level's 57.01%
Blackest Night: Titans #2- Power Level's 57.03%
Green Lantern #46- Power Level's 75.25%
Blackest Night: Batman #3- No power levels but just seems to fit here.
The Phantom Stranger #42- Takes place not long after the Spectre Rising in BN #2. Has to take place after BN: Batman #3 as well, factoring in Deadman's involvement.
Catwoman #83- The blackout in Gotham is mentioned. Seems to be pre-Nekron rise as well.
Green Lantern Corps #41- Power Level's 85.26%
Blackest Night: Superman #3- Power Levels 93.01%
Blackest Night: Titans #3- No power levels but just seems to fit here.
Outsiders #23- Black Lantern Terra appears at the end of it. Given the next issue is post-BN: Titans #3, it makes sense here.
Outsiders #24- The events of BN: Titans #3 are recalled but it seems to be pre-Nekron rise.
Outsiders #25- The rest of the fight from the previous issue.
Justice League of America #39- Difficult to place but seems to be pre-Nekron rise.
Justice League of America #40- The previous issue's fight is concluded.
Teen Titans #77- Most signs point to it being post BN: Titans #3 but pre-Nekron rise.
Teen Titans #78- Concludes previous issue's events right afterward.
Weird Western Tales #71- Doesn't appear to matter where to put it, but it seems pre-Nekron rise.
Solomon Grundy #7- Solomon Grundy is resurrected with a Black Ring. Though is a BN: Prelude, it makes sense to put after BN: Batman as Etrigan has been involved in S/B #66 & S/B #67 which seem to form one story arc.
Superman/Batman #66- Blackout may be a BN: Batman reference, plus this is definitely a post Outsiders #23 Man-Bat appearance.
Superman/Batman #67- Picks up right where #66 left off.
Green Lantern #47- No Power Levels but just seems to fit here.
Blackest Night #4- 100%. Nekron Rises.
Blackest Night: Flash #1- The ending of the issue coincides with the closing events of BN #4.
Secret Six #17- Continuing from Suicide Squad #67, but we see mention of Barry's message from BN #4 at the end.
Secret Six #18- Picks up immediately from SS #17.
Doom Patrol #4- We see Barry's message from BN #4.
Doom Patrol #5- The previous's issue's story is wrapped up very shortly afterward.
Booster Gold #26- We see Rip Hunter talking about Barry's message from BN #4.
Booster Gold #27- The previous's issue's story is wrapped up very shortly afterward.
R.E.B.E.L.S. #10- We see Vril Dox mentioning receiving Barry's message from BN #4.
R.E.B.E.L.S. #11- The previous's issue's story is wrapped up very shortly afterward.
Blackest Night: JSA #1- Appears to be shortly after Damage's death in BN #4.
Blackest Night: JSA #2- Takes place shortly thereafter. No reason to displace.
Blackest Night: JSA #3- Picks up immediately after #2.
Green Lantern Corps #42- Power Levels 100%, and "100% Power Level Exceeded."
Blackest Night: Wonder Woman #1- Leads directly into the events of BN #5.
Green Lantern #48- Leads directly into the events of BN #5.
Blackest Night #5- "Die!"
Green Lantern Corps #43- Doesn't appear to matter whether it is pre-"Die!" or post-"Die!" at the moment.
Green Lantern #49- John Stewart brings Xanshi to Earth... which we see followed-up on in BN #6.
Blackest Night #6- Temporary new Lanterns are selected for each Corps.
Blackest Night: Wonder Woman #2- Simultaneous to BN #6's conclusion.
Blackest Night: Wonder Woman #3- Takes place in-between pages at the end of BN #6.
Blackest Night: Flash #2- Picks up virtually immediately after BN #6.
Green Arrow #30- Seems to be immediately after BN #6 but before Adventure Comics #7.
Green Lantern Corps #44- No marker to indicate placement, but seems to be concurrent with BN #6/after.
Blackest Night: Flash #3- At the end everyone races toward the Spectre.
Green Lantern #50- Parallax Rebirth. The Spectre is fought.
The Atom and Hawkman #46- We see the other Corps' fighting the Spectre as seen in GL #50.
Adventure Comics #7- BL Superboy is freed. Likely before GL #51 since BL Superboy is not seen on the ending splash.
Green Lantern #51- The Spectre is defeated and Parallax is taken away.
Green Lantern Corps #45- The GLC appears to transport to Earth at the end.
Blackest Night #7- Rise of the White Lantern.
Green Lantern Corps #46- Clearly post-BN #7 with the Anti-Monitor getting free.
Green Lantern #52- Leads direcly into BN #8.
Blackest Night #8- The Conclusion.
R.E.B.E.L.S. #12- "For three whole days, he fought [the Black Lanterns] without pause."

Please tell me if it works now..

p.s. The chronology is shamelessly copied from the web. However, I agree with it 100%. If you have a different chronology, we can discuss it here..